I use the recommened TF test kit and had a few questions. When conducting the CYA test, I mix the bottle, wait AT LEAST 30 seconds and then mix again and test. With that said...
1) If I wait exactly 30 seconds, I get a read of 35. If I wait around 2 minutes, I get a read of 65. Is there a direct relationship between the wait time and the reading? Which one is accurate?
2) When dispensing into the reading tube, I usually let the stream glide down the wall of the tube instead of directly dropping it into the middle of the tube. Is there a difference as I noticed it clouds up less when I dispense down the side of the tube?
3) After dispensing, is there a time limit to wait before I should read? Also, is there too long a time limit before the read is inaccurate?
4) I have based my entire summer off the 35 reading and kept my CH at 5ppm with no issues. Is 35 too low?